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<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="./css/materialdesignicons.min.css">
    <style>
        .nav{
            position: fixed;
            bottom: 0;
            left: 0;
            border-top: 1px solid;
            height: 100px;
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
       .nav .item{
           display: flex;
           flex-direction: column;
           align-items: center;
       }
    </style>
</head>
<body>

    <div class="nav">
        <div class="item">
            <span class="mdi mdi-tab-plus"></span>
            肺炎保障
        </div>
        <div class="item">
            <span class="mdi mdi-clover"></span>
            美团互助
        </div>
        <div class="item">
            <span class="mdi mdi-check-box-outline"></span>
            订单列表
        </div>
        <div class="item">
            <span class="mdi mdi-robber"></span>
            理赔服务
        </div>

    </div>

</body>
</html>